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| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Designing and Implementing Enterprise Network Assurance |
| Exam Number: | 300-445 |
| Related Certifications: | CCNP Enterprise Cisco Certified Specialist - Enterprise Network Assurance |
| Available Languages: | English |
| Real Exam Qty: | 55-65 |
| Passing Score: | 750 (out of 1000) |
| Exam Price: | $300 USD |
| Exam Format: | Multiple-answer, Drag-and-drop, Fill-in-the-blank, Multiple-choice |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years |
| Sample Questions: | Cisco 300-445 Sample Questions |
| Exam Way: | Pearson VUE (Online or Test Center) |
| Pre Condition: | None |
| Official Syllabus URL: | https://learningnetwork.cisco.com/s/300-445-exam-topics |
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NEW QUESTION # 59
Which RFC defines the concept of passive monitoring in network assurance?
Answer: A
Explanation:
RFC 7799 standardizes passive monitoring methodologies, providing guidelines for data collection without affecting network traffic.
NEW QUESTION # 60
In network monitoring, what does RFC 7799 primarily focus on?
Answer: A
Explanation:
RFC 7799 primarily focuses on network security, providing guidelines and best practices for secure network monitoring implementations.
NEW QUESTION # 61
Exhibit:
An engineer works to optimize a website by reducing the page-load time to below 500 ms. The engineer set up a Cisco ThousandEyes page-load test to baseline the current website performance. Which action should be recommended to reduce page-load time?
Answer: C
Explanation:
In the context of Designing and Implementing Enterprise Network Assurance (300-445 ENNA) , analyzing page-load metrics within Cisco ThousandEyes requires identifying the primary bottlenecks that contribute to the Total Page Load Time . The provided screenshot displays a " Page Breakdown " of 7 resources totaling 953 kB. A critical observation of the pie chart reveals that Images (the teal-colored segment) constitute the vast majority of the page ' s payload and resource count.
When the goal is to reduce the page-load time from 1023 ms to below 500 ms , the engineer must target the heaviest components. Lazy loading is a design pattern that defers the initialization of non-critical resources at page load time. Instead of loading all images simultaneously when the user first navigates to the URL, lazy loading ensures that images are only downloaded as they are about to enter the viewport. This significantly reduces the initial DOM load time and the total Page Load Time because the browser does not have to wait for large image files to be fully retrieved before declaring the page " loaded. " Alternative options are less effective in this specific scenario based on the data:
* AJAX (XHR/Fetch): The chart shows that XHR and Fetch resources represent a negligible sliver of the total weight; optimizing them would yield minimal gains.
* Moving IMG elements: While moving scripts to the bottom can help with rendering, moving image elements to the bottom of the body does not stop the browser from initiating the download requests immediately, thus failing to significantly reduce the total load time.
* CDN for Fonts: The " Font " category is also a small fraction of the total 953 kB. While a CDN is a best practice for latency, it does not address the primary " weight " issue caused by the images.
Therefore, implementing lazy loading (Option C) is the most impactful recommendation. It directly addresses the largest resource consumer (Images) identified in the ThousandEyes Page Breakdown, allowing the engineer to reach the sub-500 ms performance target.
NEW QUESTION # 62
Refer to the exhibit.
An engineer is tasked with configuring a new test to monitor a web application from the employee ' s point of view. What two actions should be taken to fulfill the requirement?
Answer: D,E
Explanation:
In the Designing and Implementing Enterprise Network Assurance (300-445 ENNA) curriculum, monitoring the digital experience of internal employees requires leveraging ThousandEyes Endpoint Agents to simulate or record traffic from the user ' s specific vantage point. When an engineer needs to monitor a specific, potentially internal or non-standard web application, they must utilize the Custom Application workflow within the Endpoint Experience settings.
According to the ENNA implementation standards, the first necessary action is to Create a new custom application monitor (Option A). In the ThousandEyes portal under Endpoint Experience > Test Settings > Synthetic Tests , the " Monitor Application " button provides access to pre-defined templates for popular services like Microsoft 365 or Webex. However, for a unique enterprise application, the engineer must select
" Custom Application " to define the application ' s identity, including its name and the relevant domain or URL.
The second required action is to Add a new scheduled test to the monitor (Option C). Endpoint Agents perform Scheduled Tests at regular, predefined intervals-such as every 5 or 10 minutes-to proactively check the application ' s availability, response time, and network path health without requiring user interaction. By adding a scheduled HTTP Server or Network test to the custom monitor, the engineer ensures a consistent baseline of the application ' s performance as seen from the employee ' s machine.
Reviewing the incorrect options:
* Google Suite monitor (Option B): This is a specific template for Google Workspace and is not suitable for a custom application.
* Dynamic Tests (Option D): These are specifically designed for collaboration tools like Zoom or Microsoft Teams to capture ad-hoc sessions; they are generally not used for baselining a standard custom web application.
* Test Template (Option E): While all monitors are based on templates, " adding a new template " is not a configuration action but rather a result of the monitoring setup.
NEW QUESTION # 63
What role does synthetic testing play in network assurance?
Answer: D
Explanation:
Synthetic testing plays a crucial role in network assurance by simulating user interactions with applications, enabling proactive monitoring and performance optimization.
NEW QUESTION # 64
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